JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

[an error occurred while processing this directive]

JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

Home | About Journal | Editorial Board | Subscriptions | Instruction for Authors | Priority of publication | 中文

　

Office Online

　

　

　

　

　

　

Editor-in-chief

　

Journal Online

　

　

Forthcoming Articles

　

　

　

　

　

Download Articles

　

　

Quick Search

Advanced Search

JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

	2014 Vol.23 Issue.3 Published 2014-06-28

Article

	153	Interpretation for exercise electrocardiogram：2013

		The 1930s witnessed the application of electrocardiogram into exercise test, called exercise electrocardiogram. In the 1960s, exercise electrocardiogram was popularized in clinical diagnosis of myocardial ischemia. In the past few decades, great development has been achieved in this field. This paper updates the interpretation for exercise electrocardiogram, according to Exercise standards for testing and training published by AHA in 2013.
		2014 Vol. 23 (3): 153-156 [Abstract] ( 1239 ) [HTML 1KB] [ PDF 1609KB] ( 2360 )

	156


		2014 Vol. 23 (3): 156-156 [Abstract] ( 617 ) [HTML 1KB] [ PDF 867KB] ( 1053 )

	157	Effects of strain dyssynchrony index on response evaluations in patients with cardiac resynchronization therapy postoperatively

		Objective To investigate the effects of strain dyssynchrony index(SDI) on response evaluations in patients with cardiac resynchronization therapy(CRT) postoperatively.MethodsThe synchrony and systolic function of left ventricle of 25 patients with CRT were evaluated with conventional echocardiography, tissue Doppler imaging and speckle tracking imaging before and 6 months after CRT procedure respectively. The longitudinal， radial and circumferential SDI was calculated as the average sum of difference between the corresponding peak strain and endsystolic peak respectively. Meanwhile, changes in patients’ heart function before and 6 months after CRT procedure were also assessed according to clinical and echocardiographic performance. Response to CRT in clinic was defined as improvement of more than 1 class in heart function grade. Response to CRT in echocardiography was defined as reduction in left ventricular endsystolic volume ≥15% 6 months after CRT.ResultsAmong the 3 SDI, radial SDI≥6.6% was the best predictor of response to CRT, with sensitivity of 83%, specificity of 83%, and an area of 0.88 beneath the curve (P<0.001). Circumferential SDI≥3.2% and longitudinal SDI ≥3.5% were also found to be predictive of response to CRT, with areas of 0.78 and 0.76 beneath the curve, respectively(P<0.05). The rate of response to CRT in patients with 3 positive SDIs was 100%. Moreover, radial, circumferential and longitudinal SDI at baseline were correlated with reduction of left ventricular endsystolic volume.ConclusionThe radial SDI can well predict patients’ response to CRT postoperatively, whereas a combination of 3 SDI proves to be more accurate.
		2014 Vol. 23 (3): 157-162 [Abstract] ( 893 ) [HTML 1KB] [ PDF 1383KB] ( 1394 )

	163	Relationship between different parts of old myocardial infarction complicating fQRS and types of ventricular arrhythmias
		ZHANG Yuan, LYU Jin-Lan, MA Shu-Ying, et al
		Objective By analyzing the incidence of ventricular arrhythmias in patients with old myocardial infarction (OMI) in different parts complicating fragmented QRS complex(fQRS), to explore the relationship between parts of infarction in OMI patients and arrhythmias. MethodsOne hundred and fortyseven OMI patients with fQRS and ventricular arrhythmia were divided into anterior infarction group(group A), inferior infarction group(group B) and lateral wall infarction group(group C) by ECG and colored Doppler characteristics. All of the enrolled cases underwent 24hour Holter inspections and their results about ventricular arrhythmias were separately made comparative analysis. ResultsComparing between group A and group B, the differences of incidences of nonsustained ventricular tachycardia and PVCs Lown grade 3 to 5 were statistically significant (P<0.05). Comparing between group A and group C, the incidence of total number of PVCs<720/24 h was statistically significantly different(P<0.05). There was no statistically significant difference between group B and group C. ConclusionAmong the OMI patients complicated by fQRS and ventricular arrhythmias, the usual type of ventricular arrhythmia differs with the parts of infarction, which increases the diagnostic sensitivity of fQRS for OMI further so as to make early intervention and reduce the incidence of sudden cardiac death.
		2014 Vol. 23 (3): 163-166 [Abstract] ( 1486 ) [HTML 1KB] [ PDF 2210KB] ( 1320 )

	167	Heart rate deceleration runs in patients with acute myocardial infarction

		Objective To investigate the relationship between risk stratification of heart rate deceleration runs(DRs) and deceleration capacity(DC), standard diviation of NN intervals(SDNN), left ventricular ejection fraction(LVEF) as well as severity of coronary artery stenosis in patients with acute myocardial infarction(AMI). MethodsThirtyeight cases with AMI and 20 healthy subjects underwent 24hour ambulatory electrocardiography and echocardiogram examinations while their DC values, DRs, HRV time domain indexes of SDNN and LVEF were measured. Coronary angiography was carried out on AMI patients to record the degree of coronary artery stenosis. According to the results of DRs, all of the enrolled subjects were divided into lowrisk group(17 cases), mediumrisk group(15 cases), highrisk group(6 cases) and control group(20 cases). Amongst the 4 groups, ages, DC values, SDNN, LVEF and degree of coronary artery stenosis were compared. Results① Compared with lowrisk group, there was a significant rise of ages in highrisk group with statistically significant difference(P<0.05). ② From control group to highrisk group, values of DC and SDNN decreased gradually. The two indexes significantly reduced in highrisk group if compared with the other 3 groups, with statistically significant difference(P<0.05). ③ There was no obvious correlation between risk stratification of DRs and degree of coronary artery stenosis. ConclusionFor AMI patients, the risk stratification of DRs and DC, SDNN are significantly correlated, all of which can evaluate vagus tension of AMI patients and a combination of which can improve early warning of sudden death after myocardial infarction.
		2014 Vol. 23 (3): 167-169 [Abstract] ( 1213 ) [HTML 1KB] [ PDF 927KB] ( 1507 )

	170	Cardiac function of young and middle-aged patients with dilated cardiomyopathy complicating heart failure

		Objective To explore the relationship between cardiac function and dilated cardiomyopathy with or without heart failure among young and middleaged patients and discuss its clinical significance. MethodsExaminations of echocardiogram and ECG were carried out on 123 patients with dilated cardiomyopathy in our hospital, among whom were 65 cases complicating heart failure(heartfailure group) and 58 cases not accompanied with the disease(nonheartfailure group). Between the 2 groups, the sizes of heart, cardiac function and the occurrence of arrhythmia were compared. ResultsCompared with nonheartfailure group, the differences in left ventricular end systolic diameter(LVESd), left ventricular end diastolic diameter(LVEDd), left atrial diameter(LAD), left ventricular ejection fraction(LVEF) and left ventricular fractional shortening(LVFS) of heartfailure group were statistically significant(P<0.01). ② The incidences of changes of QRS duration, low voltage in limb leads, abnormal Q waves and STT segment in heartfailure group were all slightly higher than those of nonheartfailure group, without statistically significant differences(P>0.05). Compared with nonheartfailure group, there were statistically significant differences(P<0.01) in the incidences of atrial arrhythmia, ventricular arrhythmia and conduction block in heartfailure group. ③ On admission, cardiac function of patients in heartfailure group was classified into level Ⅲ and Ⅳ, accounting for 58.4% and 21.5%, respectively. After treatment in hospital, cardiac function of the 2 groups both improved significantly compared with that on admission(P<0.05). ConclusionDilated cardiomyopathy is followed by obvious increase of left ventricular end diastolic diameter and significant decrease of left ventricular ejection fraction(LVEF) if accompanied with heart failure and arrhythmia while the phenomena are more or less associated with cardiac function. By getting rid of inducing factors of heart failure, early diagnosis and treatment can improve cardiac function, prognosis and life quality of patients.
		2014 Vol. 23 (3): 170-173 [Abstract] ( 924 ) [HTML 1KB] [ PDF 904KB] ( 1797 )

	174	Influence of PCI on dynamic changes of QT dispersion in patients with acute myocardial infarction

		Objective By analyzing dynamic changes of QT dispersion(QTd) in patients with acute myocardial infarction(AMI) after percutaneous coronary intervention(PCI), to evaluate the role PCI plays in recovering cardiac muscle after infarction and clinical values of QTd for judging the effect of PCI treatment and prognosis of AMI patients. MethodsThirtyfive AMI patients in our hospital from September 2013 to March 2014 were enrolled, among whom were 15 cases successfully undergone emergency PCI treatment within 2 weeks and 20 cases treated by delayed surgery. We collected 12lead ECGs on their admission, and separately 6 h, 12 h, 24 h and 48 h after PCI, and then measured QTd. ECGs on admission, 2 days and 1-2 weeks after admission were also collected from 30 AMI patients in our hospital from 2010 to 2011 who only had taken medical treatment without thrombolysis or PCI surgery, and their QTd was measured. Another 30 healthy people were regarded as control group. ResultsCompared with the control group, QTd of AMI treatment group increased before and 48 h after PCI surgery and the difference was statistically significant(P<0.001). The decrease of QTd 48 h after PCI surgery among AMI treatment group was significantly different from that before PCI surgery(P＜0.001). Compared with the nontreatment group, decrease of QTd was found at the same time point for both emergency treatment group and delayed treatment group, and the drop of the former was bigger than that of the latter.ConclusionIt reveals by the dynamic changes of QTd in AMI patients after PCI surgery that with the recanalization of occluded coronary artery, myocardial oxygen and blood supply will increase, normal cardiac electrophysiology can be restored, and the inconsistency of ventricular repolarization will be improved. In addition, if compared with delayed PCI surgery, emergency PCI surgery is capable of reducing QTd more quickly and significantly.
		2014 Vol. 23 (3): 174-177 [Abstract] ( 1066 ) [HTML 1KB] [ PDF 1050KB] ( 1219 )

	178	Influence of thrombolytic therapy for acute cerebral infarction on QT dispersion and its clinical significance

		Objective To investigate the changes of QT dispersion(QTd) and its clinical significance for patients with acute cerebral infarction after successful thrombolytic therapy and nonthrombolytic ones.MethodsSeventyseven patients with acute cerebral infarction were divided into thrombolytic recanalization group (group A, 41 cases) and nonthrombolysis group (group B, 36 cases). Between the 2 groups, the changes of QTd and QTcd(corrected QT dispersion) and the occurrence of ventricular arrhythmia were analysed.ResultsCompared with group B, QTd, QTcd and the occurrence of ventricular arrhythmia in group A all decreased significantly with statistically significant differences(P<0.05).ConclusionAmongst patients with acute cerebral infarction, their QTd and QTcd both decrease and the occurrence of ventricular arrhythmia also reduces significantly after successful thrombolytic therapy.
		2014 Vol. 23 (3): 178-180 [Abstract] ( 1226 ) [HTML 1KB] [ PDF 889KB] ( 1355 )

	181


		2014 Vol. 23 (3): 181-181 [Abstract] ( 586 ) [HTML 1KB] [ PDF 870KB] ( 1070 )

	182	Clinical significance of QT dispersion in patients with acute craniocerebral injury complicating cerebrocardiac syndrome

		Objective To investigate the clinical value of QT dispersion(QTd) for predicting ventricular arrhythmia in patients with acute craniocerebral injury complicating cerebrocardiac syndrome. MethodsThis study enrolled 100 cases in all. Fifty patients with acute craniocerebral injury complicating cerebrocardiac syndrome were divided into nonventricular arrhythmia group(39 cases, group A) and ventricular arrhythmia group(11 cases, group B) while another 50 healthy people were chosen as control group. QTd and corrective QT dispersion (QTcd) of each group were all measured by 12lead synchronous ECG.ResultsCompared with the control group, the differences of QTd and QTcd in group A were neither statistically significant(P>0.05). Separately compared with group A and control group, QTd and QTcd in group B both significantly increased and the differences were both statistically significant(P <0.05). ConclusionAmong patients with acute craniocerebral injury complicating cerebrocardiac syndrome, QTd and QTcd significantly increase in those accompanied with ventricular arrhythmia and therefore QTd and QTcd can serve as reliable indexes for predicting ventricular arrhythmia in those patients.
		2014 Vol. 23 (3): 182-183 [Abstract] ( 938 ) [HTML 1KB] [ PDF 1025KB] ( 1237 )

	185


		2014 Vol. 23 (3): 185-185 [Abstract] ( 566 ) [HTML 1KB] [ PDF 1103KB] ( 1437 )

	187


		2014 Vol. 23 (3): 187-190 [Abstract] ( 1352 ) [HTML 1KB] [ PDF 4038KB] ( 2324 )

	190


		2014 Vol. 23 (3): 190-190 [Abstract] ( 552 ) [HTML 1KB] [ PDF 1615KB] ( 1644 )

	191


		2014 Vol. 23 (3): 191-195 [Abstract] ( 1076 ) [HTML 1KB] [ PDF 2896KB] ( 1576 )

	196


		2014 Vol. 23 (3): 196-203 [Abstract] ( 1144 ) [HTML 1KB] [ PDF 5523KB] ( 3305 )

	204	Progress of researches on relationship between atrial fibrillation and inflammation

		Atrial fibrillation is a clinically usual arrhythmia, which is a disturbance of atrial rhythm mainly arising from many small turnback rings caused by atrial dominant turnback ring. Among various reasons which induce the disease, inflammation proves to be an important one according to more and more studies at present. This paper mainly reviews the progress of researches related to atrial fibrillation and inflammation.
		2014 Vol. 23 (3): 204-207 [Abstract] ( 1055 ) [HTML 1KB] [ PDF 913KB] ( 1445 )

	208	Figure method: a new approach to quick diagnosis of ventricular tachycardia

		Ventricular tachycardia has always been an acute arrhythmia which needs urgent treatment. However it is still difficult for clinicians to find an accurate and quick method to diagnose it by traditional 12lead electrocardiogram(ECG). According to the fact that surface ECG shows different characteristics with different origins of ventricular tachycardia, we carefully analyzed a large number of ECGs. By the classification of origins of ventricular tachycardia, we summarized a new approach,figure method, which was quick, convenient and accurate in diagnosing the disease. In order to testify the diagnostic accuracy of this new method, we collected 280 12lead surface ECGs when ventricular tachycardia attacked and these ECGs were belonging to patients who had been specifically diagnosed with the disease by electrophysiologic examinations from January 2011 to December 2013 in our hospital. Figure method was utilized in the analysis of those ECGs, among which 177 ones coincided with diagnostic conditions of the new method， with a coincidence rate of 63.21%. This paper manifests the convenience, rapidity and high efficiency of figure method and it is also easy to be mastered by cardiologist and noncardiovascular clinicians. The new method fits well for clinical requirements.
		2014 Vol. 23 (3): 208-211 [Abstract] ( 835 ) [HTML 1KB] [ PDF 1779KB] ( 1408 )

	212	Differential diagnosis of wide QRS tachycardia by a combination of three process methods: a report on three cases

		This paper applies Brugada fourstep process, Vereckei fourstep method and aVR lead fourstep method to the differential diagnosis of wide QRS tachycardia ECGs. The enrolled 3 cases were all diagnosed with ventricular tachycardia and their ECGs were converted into sinus rhythm after individualized treatments. It implies that a combination of various approaches might give a quick and accurate diagnosis for wide QRS tachycardia ECG.
		2014 Vol. 23 (3): 212-215 [Abstract] ( 761 ) [HTML 1KB] [ PDF 4674KB] ( 1470 )

	216


		2014 Vol. 23 (3): 216-216 [Abstract] ( 911 ) [HTML 1KB] [ PDF 1566KB] ( 1597 )

	217


		2014 Vol. 23 (3): 217-218 [Abstract] ( 1027 ) [HTML 1KB] [ PDF 1892KB] ( 1573 )

	219


		2014 Vol. 23 (3): 219-220 [Abstract] ( 1217 ) [HTML 1KB] [ PDF 1613KB] ( 1982 )

	221


		2014 Vol. 23 (3): 221-222 [Abstract] ( 1058 ) [HTML 1KB] [ PDF 1516KB] ( 1331 )

	223


		2014 Vol. 23 (3): 223-224 [Abstract] ( 899 ) [HTML 1KB] [ PDF 2051KB] ( 1349 )

	224


		2014 Vol. 23 (3): 224-224 [Abstract] ( 517 ) [HTML 1KB] [ PDF 1183KB] ( 980 )

	225


		2014 Vol. 23 (3): 225-226 [Abstract] ( 1100 ) [HTML 1KB] [ PDF 3262KB] ( 1817 )

	227


		2014 Vol. 23 (3): 227-228 [Abstract] ( 1134 ) [HTML 1KB] [ PDF 2031KB] ( 1451 )

实用心电学杂志

　

News

　

　　　　　　　　　　More

　

Links

　

　　　　　　　　　　More

Copyright © 2011 JOURNAL OF PRACTICAL ELECTROCARDIOLOGY
Support by Beijing Magtech Co.Ltd E-mail：support@magtech.com.cn